<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue </title>
<script src="https://lf3-cdn-tos.bytecdntp.com/cdn/expire-1-M/vue/3.2.26/vue.global.min.js"></script>
</head>
<body>
<div id="hello-vue" class="demo">
  {{ message }}
</div>

<template>
    <div>
      <h1>{{ message }}</h1>
      <h1>{{ message }}</h1>
    </div>
  </template> 
  <script>

 const HelloVueApp ={
    data() {
      return {
        message: 'Hello, Vue 3!'
      };
    }
  };
  Vue.createApp(HelloVueApp).mount('#hello-vue')
  </script>
</body>
</html>